Compound trolley-wheel.



1. c. OLLARD. COMPOUND IROLLEY WHEEL. APPLICATION FILE-D SEPT. 21 19.15. 1,240,358. PatentedSept. 18,1917.

i JAMES-CI, ant-A 5, OETA QMAQWASHI TON, Assrcrnon T 0mm TBOLLEY'Y Y WHEEL'COMP4NY, OEDOVER, DELAWARE.

' To' all eukom it may 6mm.- l

:1'Wa'shington, have irwented certain new and 111 i'usefujl Improvements in CompoundjTrolley- WheelS, 0f whichgthe followingis .a spe'ci- 'fication, r j 1. v ,This .invention relates tocxtr'olley wheels suchfwheels' and to provide face oi; hardened;metal.

I attain these, and *--'0ther accompanying h dra-wings, in, Which+ 1on of one of the arms or"spokes thereof;

Fig; 4: is'asidelelevation,f partly in 'section,

' tion having beenf removedl therefromf;

/ similar parts throughout the several views; Trolley wheels have heretofo're been made *metals are, very desirable'iforQthe outer or pounds; are 'expensiveland the castings have i-stren gth and-wearing qualities required in bushing the center of; such wheel to take 'thexwear of the acbearing; pin. 'In: order to he} following described compound trolley a ap da- *Whlc' m this gra t talema e c BeitflmoWn-that 1, JAMES" C. OLIARD,

{a citizen of the United States,"residing:,at; 'Tacoma, in the county of -]?ier( :e, State of an dhas: for its object to reduce the "cost of a l g surv ects "by the devices and e e ts,illustrated in the red 'isla'sid'e elevationof my .i

proved trolley-Wheel; Fig. 2 i

of the central portion .thereofljandl Fig. f5

' "1 rim'jiportion thereof;' the, central or'fhub per i provedsection'as showniand has-a thick:

:We'a ring l ,)dV 6." immediately; adjacent said" Thus it Will be seen that the Wheel thus "forme -win consist of a lessexpensivemetal than usual l a'nd' willtherefore be cheaper;

-,that}itslife will depend on the thickness of.

:1: Similar x lumerals of ,jrefeifence r'eferj to r mjone' casting, usually ,o fi hrass' or "one of; a tllQ "VaI'1011S bronze 5 compounds; and- 'these i l: rim [parts of such wheels, but all these.-:c0m-:

i to'fbe made quite thick tojg'ivethewheel the jwpractical operation; j Further, it is" often necessary to-provide 'a-spec'ial hardened overcome thesedifliculties' l have {invented claim is:

I, U, ay be made of'cast' iron, cast steel, or other cheap metal; said huh po'rtion V be-Q1 ing; provided {with a'jflj'snitahle centraljloose;- 'fl ro gh wh h e; b rin hole? passe th .wallsgof said hole beinq'f suitablyl hardened to resisti thefwear@thereon; -Thispb ssihasf; V I i i metal; said rim extending from arm to'arm l surface iionhasi' af series offarmsf-tlius ex: -aroi'nid the hub and having lugs formed on tending, asv shown; said arms being used for "with 'said. arms.

uesli-w ens; This-central hub; a a s oomronnn pmotnn'yi wnnnn hortion is then laid in the mold for the outer lportlon and the said bronze compound is poured in the mold in amolten state'and is aroundtheinner surface of the annular 'ring .of bronze thus I cast, said" lugs being adapted to engage the inner portion to hold thus cast on to the said 'welo or arms. Suitfable lntegral lugs or keys. are provided r said. parts from circumferential motion relatire' to each other. V or In the drawings the'iron hub'is'provided" with 'a boss 1 havinga bearing hole 2' therethrough,',the walls thereof being chilled "or 1otherwisehardened to resist;the' Wear of thebearingfA plurality of'arms or spokes 3yextend-from the boss 1.; Each arm is shaped on itsouteredge'to conform to the 'shap'eflof the bronze Wheel, asshown 'inFig.

3.1'ThebronzefWheel 4;;is cast outsideof i the hub varms i3 and is; of luniform section at! all po nts}; being provided however. with, y Y small lugs or =keysr5fon each side of, the

said arms The wheellmay beef any. ap- P the g wearing body 6 and not on the bearing;

that; Wheni the Worn through,v the hub Qrhay againibe'used by casting it into 'j ainewfrim; andathatthis form of trolley Wheel has many practical commercial advstntageSovera slml'lar Wheel madeof one -metal. c r

Having described m inventiomiwhat I v trolley 1002i 1 'Wire is formedi'of said "goodfconductive its: inner face' adjacent 'to.and contact forlflu ce xitsijeaehgby addressing theife q nmissi'onerof'Iatents, i j 

